Exploring Modified Gravity: Constraints on the $μ$ and $Σ$ Parametrization with WMAP, ACT, and SPT ...
The cosmic acceleration problem remains one of the most significant challenges in cosmology. One of the proposed solutions to this problem is the modification of gravity on large scales. In this paper, we explore the well-known $μ$-$Σ$ parametrization scenarios and confront them with observational d...
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Online Access: | https://dx.doi.org/10.48550/arxiv.2309.15781 https://arxiv.org/abs/2309.15781 |
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ftdatacite:10.48550/arxiv.2309.15781 2024-04-28T08:38:50+00:00 Exploring Modified Gravity: Constraints on the $μ$ and $Σ$ Parametrization with WMAP, ACT, and SPT ... Andrade, Uendert Capistrano, Abraão J. S. Di Valentino, Eleonora Nunes, Rafael C. 2023 https://dx.doi.org/10.48550/arxiv.2309.15781 https://arxiv.org/abs/2309.15781 unknown arXiv https://dx.doi.org/10.1093/mnras/stae402 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Cosmology and Nongalactic Astrophysics astro-ph.CO FOS Physical sciences article-journal Text Article ScholarlyArticle 2023 ftdatacite https://doi.org/10.48550/arxiv.2309.1578110.1093/mnras/stae402 2024-04-02T10:08:40Z The cosmic acceleration problem remains one of the most significant challenges in cosmology. One of the proposed solutions to this problem is the modification of gravity on large scales. In this paper, we explore the well-known $μ$-$Σ$ parametrization scenarios and confront them with observational data, including the cosmic microwave background (CMB) radiation from the Wilkinson Microwave Anisotropy Probe (WMAP), Atacama Cosmology Telescope (ACT), and South Pole Telescope (SPT), as well as large-scale structure data from the Sloan Digital Sky Survey (SDSS: BAO+RSD) and Pantheon Supernovae (SN) catalog. We employ a Bayesian framework to constrain the model parameters and discuss the implications of our results on the viability of modified gravity theories. Our analysis reveals the strengths and limitations of the $μ$-$Σ$ parametrization and provides valuable insights into the nature of gravity on cosmological scales. From the joint analysis of the ACT + WMAP + SDSS + SN, we find $μ_0 -1 = 0.02 \pm 0.19$ and ... : 7 pages, 2 figures, 4 tables. References updated; matches version published in MNRAS ... Article in Journal/Newspaper South pole DataCite Metadata Store (German National Library of Science and Technology) |
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Cosmology and Nongalactic Astrophysics astro-ph.CO FOS Physical sciences |
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Cosmology and Nongalactic Astrophysics astro-ph.CO FOS Physical sciences Andrade, Uendert Capistrano, Abraão J. S. Di Valentino, Eleonora Nunes, Rafael C. Exploring Modified Gravity: Constraints on the $μ$ and $Σ$ Parametrization with WMAP, ACT, and SPT ... |
topic_facet |
Cosmology and Nongalactic Astrophysics astro-ph.CO FOS Physical sciences |
description |
The cosmic acceleration problem remains one of the most significant challenges in cosmology. One of the proposed solutions to this problem is the modification of gravity on large scales. In this paper, we explore the well-known $μ$-$Σ$ parametrization scenarios and confront them with observational data, including the cosmic microwave background (CMB) radiation from the Wilkinson Microwave Anisotropy Probe (WMAP), Atacama Cosmology Telescope (ACT), and South Pole Telescope (SPT), as well as large-scale structure data from the Sloan Digital Sky Survey (SDSS: BAO+RSD) and Pantheon Supernovae (SN) catalog. We employ a Bayesian framework to constrain the model parameters and discuss the implications of our results on the viability of modified gravity theories. Our analysis reveals the strengths and limitations of the $μ$-$Σ$ parametrization and provides valuable insights into the nature of gravity on cosmological scales. From the joint analysis of the ACT + WMAP + SDSS + SN, we find $μ_0 -1 = 0.02 \pm 0.19$ and ... : 7 pages, 2 figures, 4 tables. References updated; matches version published in MNRAS ... |
format |
Article in Journal/Newspaper |
author |
Andrade, Uendert Capistrano, Abraão J. S. Di Valentino, Eleonora Nunes, Rafael C. |
author_facet |
Andrade, Uendert Capistrano, Abraão J. S. Di Valentino, Eleonora Nunes, Rafael C. |
author_sort |
Andrade, Uendert |
title |
Exploring Modified Gravity: Constraints on the $μ$ and $Σ$ Parametrization with WMAP, ACT, and SPT ... |
title_short |
Exploring Modified Gravity: Constraints on the $μ$ and $Σ$ Parametrization with WMAP, ACT, and SPT ... |
title_full |
Exploring Modified Gravity: Constraints on the $μ$ and $Σ$ Parametrization with WMAP, ACT, and SPT ... |
title_fullStr |
Exploring Modified Gravity: Constraints on the $μ$ and $Σ$ Parametrization with WMAP, ACT, and SPT ... |
title_full_unstemmed |
Exploring Modified Gravity: Constraints on the $μ$ and $Σ$ Parametrization with WMAP, ACT, and SPT ... |
title_sort |
exploring modified gravity: constraints on the $μ$ and $σ$ parametrization with wmap, act, and spt ... |
publisher |
arXiv |
publishDate |
2023 |
url |
https://dx.doi.org/10.48550/arxiv.2309.15781 https://arxiv.org/abs/2309.15781 |
genre |
South pole |
genre_facet |
South pole |
op_relation |
https://dx.doi.org/10.1093/mnras/stae402 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.2309.1578110.1093/mnras/stae402 |
_version_ |
1797570094777237504 |